When the connection is not so close, or when the words in apposition are qualified, the phrase should have commas before and after, as,

William, the Norman conqueror of England, lived a stormy life.

My cousin, the bold and gallant Fred, fell in battle.

Cromwell, the great Protector, died in 1658.

Exercise 31.

Insert the necessary commas.

Napoleon the fallen emperor was sent to St. Helena. I live in Washington the capital of the United States. The children love their uncle Mr. Holmes. That coat was made by Brown the village tailor. It was the lark the herald of the morn. Tom the piper’s son stole a pig. Frank the jockey’s leg is broken. Rome the city of the emperors became the city of the popes. He still feels ambition the last infirmity of noble minds. Julius Cæsar a great Roman general invaded Britain.

Examples:—Napoleon, the fallen emperor, was sent to St. Helena. I live in Washington, the capital, etc. The children love their uncle, Mr. Holmes, etc.

A Nominative of Address is marked off by commas, as,

Are you, sir, waiting for anyone?